Thermal fatigue properties of differently constructed functionally graded materials aimed for refurbishing of pressure-die-casting dies

Autor:	Goran Kugler, M. Fazarinc, Tadej Muhič, Milan Terčelj
Rok vydání:	2012
Předmět:	Thermal fatigue Materials science Silicon Annealing (metallurgy) General Engineering chemistry.chemical_element engineering.material Indentation hardness chemistry Tool steel engineering General Materials Science Surface layer Composite material Chemical composition Softening
Zdroj:	Engineering Failure Analysis. 25:238-249
ISSN:	1350-6307
DOI:	10.1016/j.engfailanal.2012.05.016
Popis:	Different surface layers, constructed on the basis of functionally graded materials using a laser cladding technique, were designed to study the possibility of using them in applications subjected to thermal fatigue. Three different filler materials, varying in terms of the concentrations of alloying elements were used. A graded chemical composition was achieved, varying the concentration of silicon from 0.1 wt.% at surface layer to 1 wt.% in the base material. A specially designed thermal fatigue test was utilized for the assessment of the thermal fatigue resistance of designed surface layers and compared with base tool steel AISI H13. The results of thermal fatigue testing showed that the different concentrations of alloying elements in the surface layers resulted in different thermal fatigue resistances. The thermal fatigue resistance was observed to be approximately 27 times higher in specimens with lower silicon content compared to base material. This was found to be closely correlated with the microhardness and the resistance to softening during annealing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fce30883e53a42c32781bc891edff4cf https://doi.org/10.1016/j.engfailanal.2012.05.016 Zobrazit plný text záznamu Full Text from ScienceDirect